Effectiveness of calcium hydroxide-based intracanal medication on infectious/inflammatory contents in teeth with post-treatment apical periodontitis

被引：44
作者：
Barbosa-Ribeiro, Marlos [1 ]
Arruda-Vasconcelos, Rodrigo [1 ]
de-Jesus-Soares, Adriana [1 ]
Zaia, Alexandre Augusto [1 ]
Randi Ferraz, Caio Cezar [1 ]
Affonso de Almeida, Jose Flavio [1 ]
Gomes, Brenda P. F. A. [1 ]
机构：
[1] State Univ Campinas UNICAMP, Piracicaba Dent Sch, Dept Restorat Dent, Div Endodont, Av Limeira 901, Piracicaba, SP, Brazil
来源：
CLINICAL ORAL INVESTIGATIONS | 2019年 / 23卷 / 06期
基金：
巴西圣保罗研究基金会;
关键词：
Bacteria; Calcium hydroxide; Chlorhexidine; Cytokines; Matrix metalloproteinases; Post-treatment apical periodontitis; Sodium hypochlorite; ROOT-CANAL INFECTION; MATRIX METALLOPROTEINASES; ENTEROCOCCUS-FAECALIS; CULTIVABLE BACTERIA; CREVICULAR FLUID; FILLED TEETH; EXPRESSION; INTERLEUKIN-1-BETA; QUANTIFICATION; ENDOTOXINS;
D O I：
10.1007/s00784-018-2719-0
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
ObjectiveThe objective of this work was to investigate in vivo the effects of calcium hydroxide-based intracanal medication (ICM) on the levels of bacteria, pro-inflammatory cytokines (PICs), and matrix metalloproteinases (MMPs) in root canals and periradicular tissues of teeth with failure of the root canal treatment and apical periodontitis.Materials and methodsTwenty infected root canals of single-rooted teeth were randomly assigned into two groups according to the irrigant used for chemomechanical preparation (CMP) (n=10 per group): G1-2% chlorhexidine (CHX) gel and G2-6% sodium hypochlorite (NaOCl). Root canal contents were taken by using paper points before CMP (S1) and after 30days of calcium hydroxide-based ICM (S2). Microbial reduction was calculated by means of colony-forming unit count (CFU/mL), with PICs and MMPs (pg/mL) being measured by using enzyme-linked immunosorbent assay (ELISA).ResultsCulturable bacteria (101.279.2), PICs (IL-1 1.20.4 and TNF- 8.8 +/- 4.7), MMP-2 (803.7 +/- 96.4), MMP-3 (453.9 +/- 229.3), MMP-8 (245.9 +/- 122.4), MMP-9 (129.4 +/- 29.6), and MMP-13 (70.8 +/- 12.8) were present in all S1 samples. After 30days of ICM (S2), a 99.5% microbial reduction was observed, together with a significant reduction of PICs in all groups. Overall, it was observed a decrease in the levels of MMPs (S2), except MMP-13, which was found in increased levels after ICM (P<.05), independently of the groups.ConclusionsCalcium hydroxide-based intracanal medications have had a positive effect on the microbial reduction by decreasing the levels of PICs and MMPs. Both auxiliary chemical substances (i.e., 2% CHX and 6% NaOCl) presented similar effects when calcium hydroxide was used as intracanal medication.Clinical relevanceTeeth with failure of the root canal treatment and apical periodontitis, and consequently with high levels of bacteria, PIC, and MMP, may present a better prognosis after a 30days of a calcium hydroxide-based ICM.
引用
收藏
页码：2759 / 2766
页数：8
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